Why are 1 euro coins made of their materials?

1 euro coins are made from a combination of nickel-brass and nickel for durability and corrosion resistance. The outer ring is composed of nickel-brass, which gives it a gold-like appearance, while the inner core is made of pure nickel, providing strength and a silver-like color. This combination not only enhances the coin's aesthetic appeal but also ensures it withstands wear and tear from circulation. Additionally, the distinct materials help in distinguishing the 1 euro coin from other denominations.